SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES
The phenomenon known as polar-cap absorption (PCA) has been studied by several different radio techniques and some of the characteristics of the absorbing regions are now fairly well known. In the present study the deviations of minimum frequencies (Δƒ min ), recorded by ionosondes at high-latitude...
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1962
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Online Access: | http://dx.doi.org/10.1139/p62-075 http://www.nrcresearchpress.com/doi/pdf/10.1139/p62-075 |
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crcansciencepubl:10.1139/p62-075 2023-12-17T10:21:29+01:00 SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES Jelly, Doris H. Collins, C. 1962 http://dx.doi.org/10.1139/p62-075 http://www.nrcresearchpress.com/doi/pdf/10.1139/p62-075 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Physics volume 40, issue 6, page 706-718 ISSN 0008-4204 1208-6045 General Physics and Astronomy journal-article 1962 crcansciencepubl https://doi.org/10.1139/p62-075 2023-11-19T13:39:37Z The phenomenon known as polar-cap absorption (PCA) has been studied by several different radio techniques and some of the characteristics of the absorbing regions are now fairly well known. In the present study the deviations of minimum frequencies (Δƒ min ), recorded by ionosondes at high-latitude Arctic and Antarctic stations, have been used synoptically to investigate the simultaneous occurrence of the absorbing regions in the northern and southern hemispheres. Detailed examination of these ionosonde data has revealed the occurrence of periods of weak absorption which have the characteristics of the large PCA events. Several of the PCA features such as starting times and durations are discussed and the morphology of one of the weak events is considered in some detail. Article in Journal/Newspaper Antarc* Antarctic Arctic Canadian Science Publishing (via Crossref) Arctic Antarctic Canadian Journal of Physics 40 6 706 718 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Physics and Astronomy |
spellingShingle |
General Physics and Astronomy Jelly, Doris H. Collins, C. SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
topic_facet |
General Physics and Astronomy |
description |
The phenomenon known as polar-cap absorption (PCA) has been studied by several different radio techniques and some of the characteristics of the absorbing regions are now fairly well known. In the present study the deviations of minimum frequencies (Δƒ min ), recorded by ionosondes at high-latitude Arctic and Antarctic stations, have been used synoptically to investigate the simultaneous occurrence of the absorbing regions in the northern and southern hemispheres. Detailed examination of these ionosonde data has revealed the occurrence of periods of weak absorption which have the characteristics of the large PCA events. Several of the PCA features such as starting times and durations are discussed and the morphology of one of the weak events is considered in some detail. |
format |
Article in Journal/Newspaper |
author |
Jelly, Doris H. Collins, C. |
author_facet |
Jelly, Doris H. Collins, C. |
author_sort |
Jelly, Doris H. |
title |
SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
title_short |
SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
title_full |
SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
title_fullStr |
SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
title_full_unstemmed |
SOME OBSERVATIONS OF POLAR-CAP ABSORPTION IN THE NORTHERN AND SOUTHERN HEMISPHERES |
title_sort |
some observations of polar-cap absorption in the northern and southern hemispheres |
publisher |
Canadian Science Publishing |
publishDate |
1962 |
url |
http://dx.doi.org/10.1139/p62-075 http://www.nrcresearchpress.com/doi/pdf/10.1139/p62-075 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
Canadian Journal of Physics volume 40, issue 6, page 706-718 ISSN 0008-4204 1208-6045 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/p62-075 |
container_title |
Canadian Journal of Physics |
container_volume |
40 |
container_issue |
6 |
container_start_page |
706 |
op_container_end_page |
718 |
_version_ |
1785535077679104000 |